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A variable modified inside a while loop is not remembered
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echo -e $lines | while read line
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done
The while loop is executed in a subshell. So a...
前有网易喂猪，后有宜信养牛 - 资讯 - 清泛网 - 专注C/C++及内核技术
...友圈。在这组海报上，乔布斯以标志莲花坐姿抱着他的mac，毕加索依偎着他的梦，香奈儿穿着她的裤子，莱特兄弟凝视着他们的第一架飞机……简洁的画面，看似毫无关联的四个人，读不懂的广告词，让每个初看到它的人心中都...
How is an overloaded method chosen when a parameter is the literal null value?
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edited Oct 23 '12 at 14:59
answered Oct 23 '12 at 14:44
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实现一个简单的服务端推方案 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...的话，通常就是Polling；如果是服务端推的话，一般就是Comet，目前比较流行的Comet...客户端和服务端的交互有推和拉两种方式：如果是客户端拉的话，通常就是Polling；如果是服务端推的话，一般就是Comet，目前比较流行的Comet实...
Matlab: Running an m-file from command-line
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What are the rules for JavaScript's automatic semicolon insertion (ASI)?
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First of all you should know which statements are affected by the automatic semicolon insertio...
How to check if multiple array keys exists
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alexalex
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Return first N key:value pairs from dict
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edited Aug 21 '19 at 12:43
ofir_aghai
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80后夫妻创业，如今身价68亿，怎么做到？ - 资讯 - 清泛网 - 专注C/C++及内核技术
80后夫妻创业，如今身价68亿，怎么做到？天蝎男王麒诚，生于1980年。双鱼女吴艳，生于1981年。他们是夫妻，合计持有上市公司汉鼎股份51.72%的股份。2012年3月，公司在创业板上市，...天蝎男王麒诚，生于1980年。双鱼女吴艳，生...
Fastest way to determine if an integer's square root is an integer
...t obvious answers. This includes negative numbers and looking at the last 4 bits. (I found looking at the last six didn't help.) I also answer yes for 0. (In reading the code below, note that my input is int64 x.)
if( x < 0 || (x&2) || ((x & 7) == 5) || ((x & 11) == 8) )
retu...